Research of Vibration Error Compensation for Inclinometers

The inclinometers play a key role in the measurement of attitude angles of TBM. During the tunneling process, TBM suffers larger vibration and impact, because its construction environment is mostly mountain which is quite different from the ordinary shield tunneling machine whose is city soft soil. It will have an effect on the correct output of inclinometers in the position and orientation measurement system. Based on the principle of wavelet transform and vibration isolation, this paper presents a vibration error compensation method of the inclinometer to reduce the vibration error and fulfill the accuracy requirements of the attitude angles of TBM. On the basis of error analysis of the vibration measurement experiment of the inclinometer, process the vibration experiment data in different calibration angle and verify the efficiency of this method. Based on this method, it can eliminate the vibration error of inclinometers in any angle in time to achieve the purpose of output correction.